TRH (thyrotropin-releasing hormone) is a tripeptide (pGlu-His-Pro-NH2) that stimulates pituitary TSH and prolactin release and exerts widespread neuromodulatory effects in the central nervous system. Its role as the master regulator of the thyroid axis makes it essential in endocrine challenge testing and neuroendocrinology research. This product is a white lyophilized powder at >=99% HPLC purity in a sealed vial. Complete batch documentation and flexible supply options are available. Stock is maintained for the most requested products to shorten lead times, and made-to-order items are typically produced within days. We support bank transfer, major digital payments and verified trade channels, with order updates provided at every shipping stage. Protective secondary packaging is standard for international parcels.